Update app.py

app.py

@@ -1,9 +1,13 @@
 import gradio as gr
 import requests
+import os
+
+# Retrieve the Open Router API Key from the Space secrets
+API_KEY = os.getenv("OpenRounter_API_KEY")
 
 def chat_with_openrouter(prompt):
     url = "https://api.openrouter.ai/v1/chat/completions"
-    headers = {"Authorization": "Bearer OpenRounter_API_KEY"}
+    headers = {"Authorization": "Bearer " + API_KEY}
     data = {
         "model": "openai/gpt-4o-mini-2024-07-18",
         "messages": [{"role": "user", "content": prompt}],